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okres m
chem.	ciclo m
math.	perìodo
stat.	período m

okres: 240 phrases in 52 subjects

Automatic control	1
Chemistry	14
Commerce	1
Construction	2
Customs	1
Economy	15
Education	2
Electric motors	1
Electric traction	3
Electronics	6
Energy industry	1
Environment	4
Finances	18
Fish farming pisciculture	3
Forestry	1
General	15
Government, administration and public services	2
Health care	2
Hobbies and pastimes	1
Human rights activism	2
Immigration and citizenship	1
Insurance	3
Isolation	1
Law	11
Life sciences	3
Mathematics	12
Medical	3
Microsoft	40
Nuclear physics	6
Obsolete / dated	4
Oil / petroleum	3
Pharmacy and pharmacology	9
Physical sciences	1
Power electronics	1
Power system protection	1
Procedural law	1
Radio	2
Radiology	3
Reliability	4
Satellite communications	5
Security systems	2
Social science	1
Sound recording	1
Statistics	11
Taxes	2
Technology	2
Telecommunications	1
Telegraphy	1
Transport	6
Ultrasound	2
United Nations	1
Wind Energy	1